"I am appealing for anyone with information about this incident to contact Dorset Police urgently.

"Unfortunately the victim was unable to get a good look at the offending vehicle, but we believe it to be dark coloured.

"The driver stopped at the scene immediately after the collision and will be well aware of what took place, and we are very keen to speak with him. I would ask him to do the right thing and contact Dorset Police in confidence."

He is described as:

-white

-around five-feet ten inches tall

-short dark hair

The victim suffered a broken leg as a result of the collision.

No arrests have been made.

Witnesses and anyone with information should call Dorset Police in confidence on 101 quoting incident number 05:403. Alternatively, call the free and anonymous Crimestoppers line on 0800 555 111 where mobile phone tariffs may apply.